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Home >> Jeep >> 2014 >> Wrangler Sahara, Standard Trans >> Repair and Diagnosis >> External Pages >> Different car >> Section 79 (2.4L - DTCS P0443 To P1593) >> Diagnosis And Testing >> P1128-Closed Loop Fueling Not Achieved - Bank 1 Upstream >> Set Condition

Set Condition

WARNING: This page is about a different car, the 2014 Dodge Journey. However, it is still accessible from the selected car via links, so may be relevant.

The Powertrain Control Module (PCM) detects a condition where the vehicle has remained in open loop fuel control, from a start-up condition, longer than a calibrated amount of time, when conditions would have otherwise expected closed loop operation. Two Trip Fault. Three good trips to turn off the MIL.